Studio/Assets/Scripts/ExternalExamples/AutoFactory/NeedsScanner.cs

using System;
using System.Collections.Generic;

namespace Studio.Test
{
    public abstract class NeedsScanner
    {
        protected List<FactoryNeeds> needs = new();
        public event Action<NeedsScanner, List<FactoryNeeds>> onScanningComplete;

        public abstract void Scanning();

        protected void ScanningComplete()
        {
            onScanningComplete.Invoke(this, needs);
        }
    }
}